Suspension spring



March 23 1926.

J. A. EBERLE SUSPENSION SPRING .Filed June 15. 1922 Patented Mar. 23, 1926.

UNITED STATES tenses JOHN A. EBERLE, OF ST. LOUIS, MISSOURI.

SUSPENSION SPRING.

Application filed June 13, 1922. Serial No. 568,028.

To all whom it may concern Be it known that I, Join: A. Ennnnn, a citizen of the United States, residing at the city of St. Louis and State of Missouri, have invented a certain new and useful Improvement in Suspension Springs, of which the following is a lull, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings. forming part of this application, in which Figure l is a view illustrating my im proved spring suspension in position.

Figure 2 is a side eievational View.

Figure 3 is an edge elevational view of said spring suspension.

My invention relates to a new and useful improvement in spring suspensions for babies and childrens s ings and the like, the object being to construct a device 01" the character described which is simple, cheap and effective.

The framework of the device is preferably made of bent wire, the parts being duplicates. The spring which sustains the weight is placed under tension when a load is placed in the swing, and should the spring break the'guiding members of the frame will constitute limit stops whereby the swing or suspendedload cannot fall to the ground. I

In the drawings, 1 indicates a chair or seat of a swing supported at its four corners by means of members 2wl1ich areprefcrably spaced apart at their upper ends by a frame 3 and thence converge to a ring t. This ring may be connected by a split ring 5 to a ring (5 formed by bending the end cross member 7 of one of the frame members of the suspension device.

8 are the legs of this frame member, which terminate at their extremities in loops or rings 9 disposed at an angle to the legs 8. 10 indicates a ring formed in the companion frame member for receivingthe book 11 in the ceiling or other point of support (see Fig. 1), said ring being formed by bending the cross-member 12 of the said companion frame member 13 over the legs of this companion frame member which project through the eyes 9, before referred to, and terminate in eyes 14 which embrace the legs 8, before referred to. v

15 indicates an expansible spring having hooks 16 formed at each end thereof, said hooks engaging the eyes 6 and 10, respeo' tively.

rxssuming that the eye 10 is supported in position, as by a hook 1]. shown in Figure 1, and the weight suspended from theeye 6, the spring 15 will be expanded to a point where the eyes 9 and 14; by engagement with each other will form limit stops, thus pre venting the spring being stretched so far as to take a permanent set or to be broken; but should the spring be broken in service, the eyes 9 and 1d will by engaging each other constitute limit stops to prevent the separation of the companion t'ramemembers, and consequently prevent the weight, such as that of a child in the swing, from falling to the floor.

What I claim is:-

l. In a spring suspension device, a single length oi wire bent at its middle to form an enclosed eye portion of restricted diameter and extending outwardly and angularly from said eye portion to complete a U shaped frame member, a similar U-shaped frame member telescopingly assembled with said first-mentioned member, said members having their legs uxtaposed and slidably interengaging and with their eye forming portions spaced apart, and a coil spring terminating in hooked ends engaging said eye forn'iing portions and thereby centered by its tension and spaced intermediate the legs of said members.

2. A spring suspension device comprising a frame composed of two wires each bent into U-shape and telescopingly assembled with their bases spaced apart, the base oi. each or" said wires including an integral circular coil for receiving and centering said spring and for respectively securing and centering the deviceto its support and to its load.

In testimony whereof I hereunto atfix my signature this 7th day of June, 1922.

JOHN A. EBERLE. 

